Indoor Vape Vapor May Increase Lung Health Risks Technology Networks Symptoms Of Second Hand Vape Smoke Secondhand nicotine vaping at home and respiratory symptoms in young adults Dangers of vaping and second hand vaping are greatly underestimated Earth.com Secondhand cigarette smoke is a combination of smoke from the burning end of a cigarette and the smoke breathed out by smokers. Exposure to secondhand smoke has been linked to cardiovascular disease, Second hand vape smoke linked to more asthma symptoms in kids